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NEET 2024 Re Exam Physics and Chemistry Paper
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© examsnet.com
Question : 8
Total: 100
An object moving along horizontal
x
-direction with kinetic energy
10
J
is displaced through
x
=
(
3
^
i
)
m
by the force
→
F
=
(
−
2
^
i
+
3
^
j
)
N
. The kinetic energy of the object at the end of the displacement
x
is
[NEET 2024 Re]
10
J
16
J
4
J
6
J
Validate
Solution:
Work energy theorem,
W
all
=
∆
K
⋅
E
(
W
all
=
work done by all forces
)
⇒
K
f
−
K
i
=
→
F
⋅
∆
→
x
⇒
K
f
−
10
=
(
−
2
^
i
+
3
^
j
)
⋅
(
3
^
i
)
K
f
−
10
=
−
6
K
f
=
4
J
© examsnet.com
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